Note how the values are essentially the same, except for the 'fully uncirculated' entry. It is very difficult to find fully uncirculated examples of the 1983 and 1985 coins. That is why the price goes up.

In our secondary graphic (to the right) with two coins labeled (A) and (B), the (A) coin is in average circulated condition, while the (B) coin is fully uncirculated. Unless your 1983 or 1985 100 pesetas looks like the (B) coin, it carries low value.

Coin: 19572, Genre: Colonizers and ColoniesRequested by: Trey Burngasser, Tue, 14-Jul-2015 17:24:12 GMTAnswered by: Paul, Wed, 15-Jul-2015 12:53:54 GMTRequester description: 1982 1982 cien pesetas A crown above a crest. two pillars on each side of the crest. beside the left pillar is an M with a crown above (I would assume is a mint mark) reverse: profile of Juan Carlos I